Declension table of ?vivāsya

Masculine	Singular	Dual	Plural
Nominative	vivāsyaḥ	vivāsyau	vivāsyāḥ
Vocative	vivāsya	vivāsyau	vivāsyāḥ
Accusative	vivāsyam	vivāsyau	vivāsyān
Instrumental	vivāsyena	vivāsyābhyām	vivāsyaiḥ vivāsyebhiḥ
Dative	vivāsyāya	vivāsyābhyām	vivāsyebhyaḥ
Ablative	vivāsyāt	vivāsyābhyām	vivāsyebhyaḥ
Genitive	vivāsyasya	vivāsyayoḥ	vivāsyānām
Locative	vivāsye	vivāsyayoḥ	vivāsyeṣu

Compound vivāsya -

Adverb -vivāsyam -vivāsyāt